Andy Croll

Of course. Email me?

Prefer in? Over include? for Readable Conditions A more natural way to check if a value is in a collection

Also I published this on a readable Rails-ism
andycroll.com/ruby/prefer...

Thought you said you hadn’t fully retired 😉

Discovering Hong Kong or taking photos of my new fit from rubytshirts.com? Gimme both! #_why

Workbench One for the nineties European computer nerds. • 100% combed and ring-spun cotton (Heather colors contain polyester) • Fabric weight: 4.2 oz./yd.² (142 g/m²) • Pre-shrunk fabric • Side-seamed construction • Shoulder-to-shoulder taping • Blank product sourced from Nicaragua, Mexico, Honduras, or the US Disclaimer: The fa

If you're within my age demographic and you lived in Europe... then I don't need to explain this.
rubytshirts.com/products/wo...

Podia meetup is gonna get spicy next month.

I will get a “proper answer” to this monthly question.

Yeah. Does the job though and makes it actually pleasant.

Scoop (plus just enough water to turn liquid) with yoghurt and fresh berries with a sprinkle of granola for crunch.

Breakfast of champions (and me)

Encouraged me to have a little visual realign too!

Shared the @tailwindcss.com and jekyll no build setup I use on my site.
andycroll.com/ruby/simple...

Simple Tailwind CSS 4 Setup for Jekyll - Andy Croll A minimal setup for Tailwind CSS 4 in Jekyll using the jekyll-tailwind gem

andycroll.com/ruby/simple-...

Just to say we're up to a very healthy 2,400+ organisations on usingrails.com. You can thank @marcoroth.dev for a bunch of those :-)

My blog. I’ll extract it.

Needs tailwind cli though.

🫡🥩

Agent OS v3 is out.

Legacy codebases are a challenge in AI development. Your agents can scan your files, but not the knowledge and decisions baked in between the lines.

Agent OS enhances (doesn't reinvent) what Claude Code does well.

New video & docs here: buildermethods.com/agent-os

Array#rfind arrived with Ruby 4.0
andycroll.com/ruby/find-t...

The sponsorship prospectus is available. Reach hundreds of Ruby developers in one go in June.

Without sponsors I have to have a very difficult conversation with my spouse about why the hell I do this at all. And probably videos don't happen.
brightonruby.com/files/brigh...

Brighton Ruby 2026 The single day, single track Ruby conference for folks who like to go to the seaside, learn things and hang out with fellow Rubyists.

You can still get reasonably priced tickets, let's get on that, prices will go up once more because early (and large) purchases are manna from heaven for events.
ti.to/goodscary/b...

2025 How long can this keep on keeping on?

Inspiration for your talk from the videos from 2025, look at the that awesome lineup!
brightonruby.com/2025/

Brighton Ruby CFP, closes end of February.

Don't just AI splurge. Stand out with a thoughtful talk submission that only you can give.

I offer _lots_ of time in advance to help hone your talk and build confidence for the big day.

forms.reform.app/goodscary/b...

Opening the CFP for Brighton Ruby 2026.
All the videos are up for last year.
Tickets still on sale.
Please sponsor. (PLEASE)

Speed days are the worst days.

Sand in the books? 😮

Year in Review: 2025
andycroll.com/other/year-...

Back on the writing horse, in time for Xmas.
except_on for validations
andycroll.com/ruby/except...

No, thank _YOU_

Congrats Marco Roth: 2025 Rails Luminary We are stoked to share that the Rails Core team has announced Marco Roth as the 2025 Rails Luminary.

Could not be more deserved. Hooray for @marcoroth.dev
rubyonrails.org/2025/12/17/...

Ruby T-shirts Matz is nice, and so are these excellent shirts. Ships worldwide.

If you wanted to have loved one buy you a t-shirt because “you’re impossible to buy for” today is your last day to get it for Xmas.
rubytshirts.com